Person · 1959 CERisto PenttiläAlso known asRisto E. J. PenttilaRisto E. J. PenttiläRisto E. J. PenttiläRisto E. J. PenttiläRisto E. J. PenttiläRisto E. J. Penttiläarchival plate · Risto Penttilä · placeholderThis entry is a stub. The Library is awakening — a longer account is being written.Connected to12 links to entries not yet ingested in the Library.